Deck 19: Objected-Oriented Analysis and Design: Object Modeling-Class Diagrams

Question 1

Showing the static structure of an object-oriented model - the object classes,their internal structure,and the relationships in which they participate - is the purpose of a:

A)class diagram
B)sequence diagram
C)collaboration diagram

Answer 1

A

Question 2

An aggregation expresses a Part-of relationship between a component object and an aggregate object.

Answer 2

True

Question 3

On a class diagram,an association is signified by a double-ended arrow that connects the participating object classes.

Answer 3

False

Question 4

Which of the following represents how an object acts and reacts?

A)behavior
B)class
C)state
D)encapsulation

Question 5

An aggregation expresses a Part-of relationship between a component object and an aggregate object.

Question 6

The technique of hiding the internal implementation details of an object from its external view is called:

A)disassociation
B)encryption
C)generalization

Question 7

An association between the instances of one or more entity types that is of interest to the organization best defines:

A)occurrence
B)relationship
C)coupling
D)cardinality

Question 8

The technique of hiding the internal implementation details of an object from its external view is called incorporation.

Question 9

Operations provide an external interface to a class.

Question 10

In UML,a class is represented by:

A)a rectangle with three compartments separated by horizontal lines
B)a circle in which the activity name is recorded
C)a double-lined ellipse in which the activity name is recorded
D)a diamond in which the activity name is recorded

Question 11

An operation is an indication of how many objects participate in a given relationship.

Question 12

Which of the following encompasses an object's properties and the values those properties have?

A)behavior
B)class
C)state
D)encapsulation

Question 13

Which of the following provides an external interface to a class?

A)constructor
B)operation
C)view
D)association

Question 14

An entity that has a well-defined role in the application domain and has state,behavior,and identity characteristics defines:

A)object
B)attribute
C)actor
D)class

Question 15

Multiplicity indicates how many objects participate in a given relationship.

Question 16

Which of the following encompasses an object's properties and the values those properties have?

A)behavior
B)class
C)state
D)encapsulation

Question 17

An object class is a logical grouping of objects that have the same attributes and behaviors.

Question 18

An entity that has a well-defined role in the application domain and has state,behavior,and identity characteristics defines:

A)object
B)attribute
C)actor
D)class

Question 19

Which of the following represents how an object acts and reacts?

A)behavior
B)class
C)state
D)encapsulation

Question 20

Which of the following provides an external interface to a class?

A)constructor
B)operation
C)view
D)association

Question 21

________ is a part-of relationship between a component object and an aggregate object.

Question 22

An ________ is a class that has no direct instances,but whose descendants may have direct instances.

Question 23

The technique of hiding the internal implementation details of an object from its external view is called:

A)disassociation
B)encryption
C)encapsulation
D)generalization

Question 24

________ is an indication of how many objects participate in a given relationship.

Question 25

An ________ is a relationship between object classes.

Question 26

What is an operation? Briefly describe three types of operations.

Question 27

________ is the technique of hiding the internal implementation details of an object from its external view.